The 7021RS walk-behind mower is powered by the innovative Briggs and Stratton 700 Series DOV engine. Its ReadyStart™ automatic choke engineering means no priming or choking is necessary to start the engine. And a patented direct overhead valve system delivers greater torque (7.0 torque power) with less vibration and noise than comparably-sized engines.With a rear wheel drive system, the 7021RS features the innovative AutoWalk™ self-propelled trigger control. Just squeeze the trigger and its variable drive operates at your own pace. A convenient, single lever allows you to adjust the cutting height on the deck.As with all of our walk mowers, the 7021RS comes with 3-in-1 mulch, rear bag and side discharge kit.